Počet záznamů: 1  

Elemental characterization of the new Czech meteorite "Morávka" by neutron and photon activation analysis

  1. 1.
    0185791 - UJF-V 20033111 RIV HU eng J - Článek v odborném periodiku
    Řanda, Zdeněk - Kučera, Jan - Soukal, Ladislav
    Elemental characterization of the new Czech meteorite "Morávka" by neutron and photon activation analysis.
    Journal of Radioanalytical and Nuclear Chemistry. Roč. 257, č. 2 (2003), s. 275-283. ISSN 0236-5731
    Výzkumný záměr: CEZ:AV0Z1048901
    Klíčová slova: Czech meteorite * photon activation analysis
    Kód oboru RIV: DD - Geochemie
    Impakt faktor: 0.472, rok: 2003

    Forty two major, minor and some trace elements were determined by activation analysis in the new Czech Morávka H5 chondrite, which fell on May 6, 2000 in the vicinity of Morávka, north-east Moravia. The elements Na, Mg, Al, Si, Cl, Ca, Ti, V, Mn, Co, Ni, and Cu were determined by means of instrumental short-time neutron activation analysis (INAA), whereas another group of elements, namely Sc, Cr, Fe, Co, Ni, Zn, As, Se, Br, Sb, La, Sm, Ir, Au and Hg were assayed using long-time INAA. Most of the rare earth elements (REE) were determined by radiochemical neutron activation analysis (RNAA) using precipitation of their oxalates, whilst for the determination of Rg and Cs and RNAA procedure based on selective sorption of the elements on ammonium phosphomolybdenate was employed. Mg, Ca, Ti, Mn, Ni, Sr, Y and Zr were determined by instrumental photon neutron activation analysis (IPAA) using the irradiation with 20 MeV bremsstrahlung from a microtron. For quality control, The U.S. Geological Survey (USGS) reference rocks basalt BCR-1 and diabase W-1 were analyzed. Moreover, the self-verification principle in activation analysis was employed to increase the credibility of the obtained resulst.
    Trvalý link: http://hdl.handle.net/11104/0002101